Calk-fastener.



J. H. HERSHBERGBR.

GALK PASTBNER.

APPLIOATIQN HLBD 12213.28, 191s.

1,072,006. Patented sept.2,1913.

I )ATIENT FFICE.

cALK-rAsTnNnn.

Specification of Letters Patent.`

Alhlteiutleil Sept. 2, 1191.3.

Application filed February 28, 1913. Serial No. 751,335.

/'o all fio/mm if may conce/11n ic it known that I, JonN II. Ilnnsnnnnonn, a citizen ot the United States, residing' at lVillies-larre, in the county of Luzerne and State ot Pennsylvania, have invented certain new and uset'ul Improvements in Galli-Fasteners; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which 1t appertains to make and use the same.

This invention relates to 'arriery, and more especially to horeshoc callzs; and the object of the same is to produce an improved Yfastener for holding the call: detachably on the shoe in such manner that it is hardly possible tor it to be come accidentally detached.

This object is carried out by constructing the device in the manner hereinafter more t'ully described and claimed, and as shown in the drawings wherein-- Figure l is a perspective view of a horseshoe inverted, showing it as provided with calks held in place by my improved fastener. Fig. 2 is an enlarged section through one end ot' the horseshoe, taken on about the line 2 2 of Fig. l. Fig. 8 is a perspective detail ot the calk in its preferred torni, and Fig. 4f. is a perspective detail ot' the locking plate in its preferred form and reversed end for end in order to show its corrugations. Fig. 5 is a longitudinal section ot a slightly modified form of fastener, and Fig. 6 is a cross section on the line 6-G thereof. Fig. 7 is a perspective detail of the call( employed with this form of fastener.

The horseshoe S and calli C which it is the purpose ot' the present fastener to connect may be ot' any suitable material and construction so long as they possess the details hereinafter referred to.

I will say at this point that I am describing in this specilication `the call( and its fastener at one heel-end ot' the shoe S; the

saine device will doubtless be duplicated at the other heel-end, and in the finished shoe it is probable that a double-length call; and fastener will be employed at the toe of the shoe if it is desired that the calk at that point be removable. In fact, any calli may be longer or shorter than shown herein.

As the toe-call( will be merely an amplification of the one herein described, I will not refer to it again. I Will say further that in all the views the shoe is reversed so that we are looking at its lower side, but in use the calks will oitl course project downward.

Across the lowerI 'tace ot' the shoe is formed a rib l whose front or inner 'face is undercut as at 2, and near the same a second rib 2:3 whose inner iace Ljlis beveledthe angle of the undercut tace 2 beine by preference greater than the angle ot the beveled it'ace Ll as seen `in Fig. Q. The active edge ot the call; (l may be ot' any suitable constrnctimi, but its body 5 is substantially triangular. .lhat is to say, it has a flat upper end (i adapted to rest normally against the fiat bottom 7 oi. the groove or space which extends across the shoe between its two ribs; ils rear face 8 is beveled to correspond with thc inner :tace 2 ot the rib l, and its 'ti-ont or inner it'ace 9 is beveled to preterably about the same angle as the bevel oi the inner face ot' the rib 3, which angle is by preference not as steep as the angle et' the inner face Q of the rib 1.

Coacting with the parts thus t'ar described is a locking plate A1.0 best illustrated in dctail in Fig. et, its body being ot a length equal to the width ol. the shoe at this point, ot a thickness slightly less than the depth ot the groove formed between the two ribs, and ol a width to till the space between the inner rib 3 and the inner tace of the calli C. For this purpose its front edge 1 '1A is beveled to correspoml with the bevel of the inner face It, and its rear edge 12 is beveled to correspond with the inner 'tace 9 ot' the calk. The plate is provided with a hole 13, and a set bolt 1li passes loosely through the same and is threaded into the shoe S as shown at 15. It is obvious that when the parts are assembled and this bolt is tightcned up, the wedge shape of the plate which results from the convergence of the edges 11 and 19 will cause it to press the call: C both rearward into the angle under the rib 1 and upward against the bottom oi. the groove 7; and the tact that the plate is not as thick as the depth ot' said groove permits the former to be drawn upward into it without touching the bottom of the groove as seen in Fie, 2.

In my preferred form ot the device illustrated best in Figs. Q, 3 and Il, I provide the trout .tace 9 of the calk C with a series of upright corrugations 16 and the rear edge 12 of the plate 10 with similar corrugations 1K7V excepting that those in the plate must eX# tend throughout; the entire height of its edge whereas those in the call( may run out to nothing at their lower ends as shown Figl- 3. The purpose of this detail is to prevent the possibility of lateral dislocation of theV parts, for it is quite obvious that the calli cannot move in line with its own length and transversely oi the shoe so long as its corrugations 16 engage those in the' edge of the plate. Y

In the modified form of my invention' shown in Figs. 5, 6, and 7 the corrugations are done away with and I provide la pin 18 projecting" from' the' base of the calli and entering a socket 19' which isformed' at a' proper point in the bottom ot the groove 7. The meeting faces" of the calli and plate in this instance will be smooth asv the corrugations are no longer required. I have inadel use of Fig. 5 to show that it is possible to have the inner face 2U of the rib 3 undercut like the inner face 2 of the other'rib yl, but not to as great an angle as that of the ad-` jacent i'ace ot the calli.l The result of this construction is that when' the parts are in place and the set' bolt tightened up, it' willf draw the plate upward into the' groove and Wedge 1t betweensald face 20 and the front tace y9 of the calk. I-Iow'ever, I prefer the beveled face 4f best seen in Fig. 2, whether the corrugations are employed or not.

The parts are obviously of jthe desired metals and proportions, and such changes" in details may be made as are not inconsistent with vthe following claims.

VNhen it is desired' to withdraw the calk, the lset bolt is loosened so that the locking plate may be dropped suiiicientl'y to disengageits corrugations from those in the calk, andthe latter can then be `Idrawn longitudinally out of place. With the form shown inv Fig. 5, the set b-olt must be loosened to a greater eX'ten't, because the calk in thisl construction will' have to be moved first downward until the pin 18 disengages the socket 19', after which it canbe moved longitudi n'ally out of the groove. Ot course the ,locking-plate can be entirelyv withdrawn ifprefer'red, and' probably thatA course willv be fol# lowed in order tol clean all parts. On re'- storing the call; the operation is reversed.

VIiat is claimed' as nen7 is: 1. In a calk fastener, the combination with i the' shoe having across its lower face a transverse groove, one wall of the groove being undercut, and a calk whose body has both side faces beveled and one of them engaging said undercut wall when the upper end oi the calk rests onAthe bottom of said groove; of a locking plate of less thickness than the depthloi' said groove in the shoe, itsinner edge being beveled to correspond with the bevel of the other face of said call; and its body having' a hole, meansl for Aholding the callrtrom lateral dislocation when engaged by the' plate, and a set bolt passing through i the latterand into the shoe.' 1 I2'. In a c'a'lk fastener, the combination with l the shoe havingl across its lower' face a transverse groove Whose rear'v wall is undercut and' l whose,iront wall is beveled, and a calli whose bodyfhas upwardly div'erging" side faces one of .which is adapted to engage the undercut wall of said groove and the other of which Eis corrugated, of a` locking plate of less tl'1`icln'ess4 than the depth of said groove Aini the shoe, its edges converging upward and' adapted to fit between the calk and the front wall of said groove and its rear edge having 'upright corrugations throughout its height, i and ,means for drawing the calli: upward into saidv groove. Y, Y 3. In a call; fastener, they combination with the shoe havingV across itsy lower face a groove, one Wall of which is undercut; oi a' ,calli whose body `is disposed in said groove, a' locking platedisp'osed also in the groove, one of these elements being beveled to engage' said undercut wall' and both elements having interengag'i'ng corrugations where' they contact with each' other, and means for drawing the pla'teV upward into the groove. In testimony whereof I have hereunto set Witnesses: y,

LIN'NIE B. CLEMEN'rs,

DiLLoN F. CiinMnN'rs.

Copies of this patent may be obtained for n've cents each, by addressing the Commissioner of' Patents, Washington, TD; C. 

